My rustler bogs when starting from dead stop. When I give it full throttle on dirt, the wheel spins but takes a while to hit top speed. If I pick up the rear end and give it gas, it revs up, but when I put it back down and give it gas at wot, it takes off but have to hold the throttle wide open for about 3 seconds before it can rev to high rpm, unless, I hit something that will get the rear tires off the ground then it revs right up. I've played with both the high and low speed screws already, made rich and lean but same thing. I checked the engine compression and it's good, this motor is fairly new,went through 1/3 gallon of gas. I also hear a sound, almost like a clicking sound, as if something is rubbing, but I've checked all over and couldn't find anything. I've installed a new clutch and spring, the gear mesh is fine.
It seems everytime I give it full throttle, it runs as if I'm only giving it quarter throttle...any ideas?